Quit smoking: A study in the Journal of Communications found that people who seek help from a social network to quit smoking may be more successful and more likely to stick to their goals.

Mental health support: Though we don't know if Facebook helps or hurts us emotionally, the social network giant lets users report suicidal activity. The company will then reach out to the person posting suicidal thoughts via messages or chats, encouraging them to call a suicide hotline.

Organ donation: Starting in May of last year, Facebook let users add their organ donor status to their profile, and upped awareness of organ donor donation.

Rare Antidepressant Battles Rare Lung Cancer

Imipramine has been used since the 1950s, but isn't used to treat depression much because of side effects such as tremors, seizures and increased heart rate. But when used in both mice and human small-cell lung cancer cells, researchers found it both stopped tumors from spreading and destroyed them.

"The five-year survival for small-cell lung cancer is only 5 percent," study co-author Julien Sage, PhD, an associate professor of pediatrics at Stanford University, said in statement. "There has not been a single efficient therapy developed in the last 30 years. But when we began to test these drugs in human cancer cells grown in a dish and in a mouse model, they worked, and they worked, and they worked."

More Americans Getting Flu Shots

More Americans than ever are getting flu shots, but health officials stress the numbers could and should be higher.

According to a new report from the U.S. Centers for Disease Control and Prevention, during the 2012-2013 flu season 56.6 percent of kids 6 months to 17 years old got a flu shot, up 5.1 percent from last flu season. In adults, 41.5 percent were vaccinated, up 2.7 percent from the previous season.

The CDC urges everyone ages 6 months and older to get a flu shot.

Artificial Legs May Soon Interpret Brain Signals

Today's artificial legs are hard to use on stairs and slopes. The new limbs detect signals in the thigh muscles that normally tell the muscles of the lower leg what to do. If the technology development continues to go well, the prosthesis will pick up the signals and move the leg just how the brain intends.

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